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(x + .......) ² = ....... + ....... + 49
(x – .......) ² = ....... – 6x + .......
(9x – .......) (9x + ....... ) = ....... – 64
(....... + .......) ² = 4x ² + 20x + .......
(....... + 2x ) ² = 4x ² + 10x + .......
(....... + 1) (....... – 1) = 36x ² – 1
(x + .......) ² = ....... + ....... + 49
(x – .......) ² = ....... – 6x + .......
(9x – .......) (9x + ....... ) = ....... – 64
(....... + .......) ² = 4x ² + 20x + .......
(....... + 2x ) ² = 4x ² + 10x + .......
(....... + 1) (....... – 1) = 36x ² – 1
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Bonjour
(x + 7) ² = x²+ 14x + 49
(x – 3) ² = x² – 6x + 9
(9x – 8) (9x + 8 ) = 81x² – 64
(2x + 5) ² = 4x ² + 20x + 25
(2,5 + 2x ) ² = 4x ² + 10x + 6,25
(6x + 1) (6x – 1) = 36x ² – 1.